Unfortunately, route matching may necessitate the collection of a long duration of data, meaning that the system cannot respond in real-time. Moreover, an extensive collection of GPS data can deplete the phone battery. Accordingly, novel in our work, we propose the use of audio to differentiate between various types of transportation since only a few seconds of audio recording is necessary for this purpose. Consequently, using audio not only reduces the system response time, but also improves the battery power consumption.For accelerometer classification methods, there are a large number of proposed solutions [14] with assorted feature extraction techniques and classification algorithms.
In [3], which is one of the most cited papers in the area of accelerometer-based activity recognition, the author proposed using frequency domain features in combination with a decision tree classifier; this approach yielded good results and has since been supported by other published works [7,14]. However, in other papers, such as [6,15], the authors noted that there are other accelerometer features that may produce even better results. While the field has not reached a final agreement on the topic of feature extraction for accelerometer signals, we have selected a hybrid approach by proposing our own feature selection algorithms [16]. Therefore, instead of using predefined features obtained via a particular type of feature extraction technique, we have utilized several potential approaches, after which our feature selection algorithm will be executed to select the best features from the whole set.
In the research area of feature selection, the numerous proposed solutions can be generally categorized into three main direc
There are more than 100 species of puffer fish worldwide and about 22 species genus Takifugu are distributed along the coastal waters of China [1,2]. Three common edible species of puffer fish, Takifugu obscurus, Takifugu flavidus and Takifugu rubripes, Dacomitinib are cultured in various locations in the Yangtze River, the East Sea, the Yellow Sea, the South Sea and the Bohai Sea of China. These cultured puffer fish, which are very popular among consumers, not only have a high growth rate but yield non-toxic meat, which still retains a delicious taste. They are regarded as a high quality fish because of their high protein content and special flavor. On the one hand, since ��cross-breeding�� technology is commonly applied to some species of puffer fish, resulting in hybrids or some intermediate varieties could not be recognized by morphological characteristics [3]. On the other hand, with the improvement of living conditions, ROCK1 the consumers have the high expectation for the quality of cultured puffer fishes.